Information card for entry 9007721

Structure parameters

• Mineral name: Combeite
• Formula: Ca1.5 Na2.64 O9 Si3
• Calculated formula: Ca1.5 Na2.64 O9 Si3
• Title of publication: Revised data for combeite, Na2Ca2Si3O9
• Authors of publication: Fischer, R. X.; Tillmanns, E.
• Journal of publication: Acta Crystallographica, Section C
• Year of publication: 1987
• Journal volume: 43
• Journal issue: 9
• Pages of publication: 1852 - 1854
• a: 10.429 Å
• b: 10.429 Å
• c: 13.149 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1238.54 ų
• Number of distinct elements: 4
• Space group number: 166
• Hermann-Mauguin space group symbol: R -3 m :H
• Hall space group symbol: -R 3 2"
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No